Magnetized recorder thread

ABSTRACT

A MAGNETIZED RECORDER THREAD AND METHOD OF MAKING SAME, WHEREIN A TEXTILE THREAD IS EASILY AND ECONOMICALLY IMPREGNATED WITH A MIXTURE OF WAX AND OXIDE AND WHICH CAN BE USED ONLY ONCE AND THEN IS THROWN AWAY IF DESIRED.

J. V. PHILLIPS June 27, 1972 MAGNETIZED RECORDER THREAD Filed June 211970 INVENTOR JAMES V. PHILLIPS ATTORNEYS United States Patent O 3,672,991 MAGNETIZED RECORDER THREAD James V. Phillips, 30 King George Road, Warren, NJ. 07060 Filed June 2, 1970, Ser. No. 42,742 Int. Cl. H01f 10/04 US. Cl. 117-235 2 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION This invention relates to a magnetic member which is particularly suited for use in magnetic recording and reproducing devices.

In the prior art, various magnetic or magnetizable materials have been utilized for magnetically recording sound vibrations so that they may be reproduced at a subsequent time. For example, magnetized tapes are currently available but such tapes are very expensive and are intended to be erased and reused. The present invention provides a magnetized recorder thread which is very easily and economically manufactured and which, because of its inexpensiveness, can be used only once and then disposed of at less cost to the user than if the more expensive recording members, such as magnetized tapes, are used several times.

OBJECTS OF THE INVENTION It is an object of this invention to provide a magnetic recorder member which may be very easily and economically manufactured.

It is another object of this invention to provide a magnetic recorder member which may be economically manufactured and which can be used only once and then disposed of at less cost to the user than if more expensive recording members are erased and reused.

It is a specific object of this invention to provide a magnetized textile thread impregnated with a mixture of wax and magnetic iron oxide which is economically manufactured and which can be disposed of after a single use.

BRIEF DESCRIPTION OF THE FIGURES FIG. 1 is a side view in elevation partly in section illustrating the apparatus utilized for manufacturing the magnetized recorder thread according to the present invention.

FIG. 2 is a sectional view of the apparatus shown in FIG. 1 and is taken along the line 2-2.

FIG. 3 is a sectional view of the apparatus shown in FIG. 1 and is taken along the line 3--3.

DETAILED DESCRIPTION OF THE INVENTION Referring now to FIG. 1, the apparatus for manufacturing a magnetized textile thread for a recording machine is indicated generally at 1 and comprises a spool or bobbin 2 having a suitable textile thread 3 wound thereon. The thread 3 passes through a guide ring 4 and under a guide pin 5 into a bath 6 comprising a mixture of wax and magnetic iron oxide. The thread 3 passes under a guide pin 7 at the opposite side or end of the bath from guide pin 5 and through a scraper 8 having an enlarged flared inlet opening 9 at one end and a diametrically reduced opening 10 at the opposite end for removing excess amounts of wax and iron oxide mixture from the thread. Upon exiting from the scraper 8, the thread 3 is wiped by means of suit- "ice able cloths 11 or the like to rub the mixture of wax and iron oxide into the textile thread. The thread is received over the hub 12 of a reel 13 or the like mounted to a hand crank 14 which is operated to draw the thread from the bobbin or spool 2 through the guide 4 and under the guide 5 through the bath 6 under guide 7 and through scraper 8 and wipers 11. The bath 6 is contained within a pan or container 15 comprising an upper part 16 in which the guides are mounted and in which the bath 6 is disposed and a lower part 17 having a suitable heating element 18 disposed therewithin for heating the bath to maintain the wax in a molten state.

The scraper 8, in the preferred embodiment, comprises a glass tube having an opening in the reduced diameter end 10 on the order of Ms inch in diameter to regulate the amount of mixture deposited on the thread. It is preferred that the thread be impregnated with a mixture of either palm, carnauha or paraffin wax and magnetic iron oxide. A mixture of percent palm wax, 25 percent carnauba wax and 50 percent of the volume of wax of magnetic iron oxide give the best results. Any suitable textile thread may be used, but it is preferred that a thread made of cotton, silk or nylon be utilized in the present invention. It is to be understood, of course, that the wipers 11 could be mechanically held instead of being hand held as shown in the drawings and that the crank 14 could be motor operated rather than cranked by hand as illustrated in the drawings.

As can be seen, by means of the present invention, a magnetized recorder thread is very easily and economically manufactured and because the magnetized thread is very inexpensive, it is used a single time and then thrown away.

As this invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, the present embodiment is therefore illustrative and not restrictive.

I claim:

1. An inexpensive, disposable magnetized recorder thread, consisting of a cotton thread, a mixture of 75 percent palm wax, 25 percent carnauba wax and 50 percent of volume of wax of magnetic iron oxide in said thread, and the amounts of wax and magnetic iron oxide in the thread being of such quantity that the recorder thread can be used only once.

2. An inexpensive, disposable magnetized recorder thread, consisting of a silk thread, a mixture of 75 percent palm wax, 25 percent carnauha wax and 50 percent of volume of wax of magnetic iron oxide in said thread, and the amounts of wax and magnetic iron oxide in the thread being of such quanity that the recorder thread can be used only once.

References Cited UNITED STATES PATENTS 2,974,056 3/ 1961 Namenyi-Katz 117237 2,566,441 9/ 1951 Camras 117-237 X 2,911,317 11/1959 Gabor 117237 X 3,404,021 10/ 1968 Newman et a1. 117-235 3,151,550 10/1964 Newman 117235 X 2,744,031 5/1956 Mumma 117-235 X 2,584,318 2/ 1952 Allyn 117-235 X FOREIGN PATENTS 922,905 8/1959 Great Britain 117-235 704,767 3/ 1965 Canada 117-235 WILLIAM D. MARTIN, Primary Examiner B. D. PIANALTO, Assistant Examiner US. Cl. X.R. 

